Simultaneous Determination of 104 Volatile Organic Compounds in Ambient Air by Preconcentration-GC-MS/FID
A method for simultaneous determination of 104 volatile organic compounds(VOCs)in ambient air by preconcentration injecting-GC-MS/FID dual detector was developed.With central cutting technique,C2~C3 low boiling point components and other components were cut into different polar chromatographic columns and detected by FID and MS respectively,which improved the analytical sensitivity of low boiling point components.The performance index of the method was satisfied with the correlation coefficients all greater than 0.99,the detection limits from 0.01×10-9 to 0.12×10-9,relative standard deviation from 0.5%to 15.6%,and the recoveries from 83.4%to 106%.